Send us your clock barrel and we will swap out the mainspring within that barrel with a new one, and send it back. The price for this service is $75 and includes the cost of the mainspring. When you add this to the cart and check out online, you will be paying for shipping. This shipping charge is your prepayment for the barrel to be shipped back to you.
What we will be doing is removing the broken or worn mainspring from the barrel in a safe way first off. Then measure the spring thickness and width and stretching it out to get the length. Next we will use the chart to get the right spring from the list and then pull that spring from the inventory that is already here with us. The installation of the spring will be done with the special tool called a mainspring winder.